The effect of Mg add on morphology and mechanical properties of Al-xMg/10Al2O3 nanocomposite produced by mechanical alloying

A. Fathy, A. Wagih, M. Abd El-Hamid, Ahmed A. Hassan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

50 Scopus citations

Abstract

Effect of Mg content on microstructure and mechanical properties of Al-xMg/10 wt.%Al2O3 (x = 0, 5, 10 and 15 wt.%) powder mixtures during milling was investigated. The results show that for the binary Al-Mg matrix, the predominant phase was an Al-Mg solid solution. With the increment of Mg to 15 wt.% the crystallite sizes of 20 h milled powders diminish from 44 to 26 nm and lattice strains increased from 0.22% to 0.32% caused by Mg atomic penetration into the substitution sites of the Al lattice. With up to 15 wt.% Mg (for 20 h milled composites) microhardness increases from 120 to 230 HV caused by the increment of the Mg concentration and dislocation density as well as the decrease of the crystallite size.
Original languageEnglish (US)
Title of host publicationAdvanced Powder Technology
PublisherElsevier B.V.
Pages1345-1350
Number of pages6
DOIs
StatePublished - Jan 1 2014
Externally publishedYes

ASJC Scopus subject areas

  • Mechanics of Materials
  • General Chemical Engineering

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